LEMANIA SINGLE BUTTON MILITARY CHRONOGRAPH STEEL Lemania, No. 1574932. Made in the late 1950s. Fine, stainless steel military wristwatch with single button chronograph and register. Two-body, polished and brushed, fixed bars, screwdown case back engraved: 0552/924-3305 H.S. 9 4232. White with painted Arabic numerals and luminous dots, outer minute/seconds track, subsidiary seconds and 30 minutes register dials, the Broad Arrow above 6. Luminous black baton hands. Cal. 2220, rhodium-plated, 17 jewels, straight-line lever escapement, monometallic balance, shock absorber, self-compensating Breguet balance spring, single button set in the case band at 2 for start-stop and return to zero functions of the chronograph.